Python – sharpen() function in Wand

Last Updated : 08 May, 2020

sharpen() function is used in order to enhance blurry edges into more distinct(sharp) edges. This is achieved using a Gaussian function. The radius value should always less than the standard deviation(sigma). Sharpen effect image more clearer and defined.

Syntax :
wand.image.sharpen(radius, sigma, channel)
Parameters :

Parameter Input Type Description

radius numbers.Real Size of gaussian aperture.

sigma numbers.real Standard deviation of the gaussian filter.

channel basestring Optional color channel to target. Default is none

Source Image:

Example 1:

# import Image from wand.image module 
from wand.image import Image 
  
# Read image using Image function 
with Image(filename ="koala.jpeg") as img: 
    # generating sharp image using sharpen() function. 
    img.sharpen(radius = 8, sigma = 4) 
    img.save(filename ="sharpkoala.jpeg") 

Output:

Example 2:
Increasing the value of radius and standard deviation.

# import Image from wand.image module 
from wand.image import Image 
  
# Read image using Image function 
with Image(filename ="koala.jpeg") as img: 
  
    # generating sharp image using sharpen() function. 
    img.sharpen(radius = 16, sigma = 8) 
    img.save(filename ="sharpkoala.jpeg") 

Output:

Wand sharpen() function - Python

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